Q: Is 491,571 a Prime Number?
A: No, 491,571 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 491571 can be evenly divided by 1 3 9 193 283 579 849 1,737 2,547 54,619 163,857 and 491,571, with no remainder.
Since 491,571 cannot be divided by just 1 and 491,571, it is not a prime number.